Это из-за ошибки, в консоли браузера:
Mixed Content: The site at 'https://www.zxaaa.net/' was loaded over a secure connection, but the file at 'https://www.zxaaa.net/DEMO8/NOTHINGM.zip?ncr' was redirected through an insecure connection. This file should be served over HTTPS. This download has been blocked. See https://blog.chromium.org/2020/02/prote … ecure.html for more details.